They are gaps in the sun's magnetic field which make a hole through the star's super-hot outer atmosphere — the corona — allowing gas to escape, according to a NASA description.

根据美国国家航空航天局的描述，他们是太阳磁场的缺口，太阳磁场制造了一个穿透这颗恒星外层大气的空洞—日冕，允许气体逃脱。

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Computers were connected to the Ethernet cable through "taps," where a hole is punched through the coax cladding and the outer conductor so a connection can be made to the inner conductor.

计算机通过贯穿熔覆和外导体的小孔与内导体接触并相连，与以太网电缆建立起连接。

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The multiple-function pump test-bed can not only test pump's inner and outer performance, but also carry out to test water turbine and small type of water hole.

多功能水泵综合试验台不仅可以进行水泵的内外特性试验，而且还可以进行水轮机试验和小水洞试验。

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And the hole's outer edge is roughly where rocky planets, like the inner planets of this solar system (including the earth), are expected to be.

ECONOMIST: Dusty genesis

Its event horizon, the outer edge inside which not even light can escape from the black hole's gravitational pull, would be only about 7.5 million kilometres.

BBC: By BBC News Online Science Editor Dr David Whitehouse